The Kimberley Dee Colin Miles cheekpiece has bars at the corners of the mouth for excellent turning control. The Colin Miles bit is a strong bit, with tiny moving rings to encourage salivation and keep the horse focussed on the bit. This bit is suitable for training or playing polocrosse.
When measuring your horse for the Colin Miles, add 5-10mm to the straight measurement, so that the bit will sit comfortably over the tongue.
The sweet blue iron mouthpiece will oxidise to a brown colour over time, as it encourages salivation and acceptance of the bit.